ULSD in 2007 chinese diesels

[bluechip]

Not to reopen a can of worms here. but since the thread was closed, I received an answer from the engine factory we will be using in 2007: The 2007 engines were certified using no.2 diesel, but ULSD will be better. This is for the ZN390 and ZN490 engines we are ordering now for 2007 tractors in our new lineup, but I susupect all engines will be OK. I know I am hopeful my 2005 CUmmins can live a long life on the new fuel, I still have a lot of coupons left in the payment book!

 

[greg_g]

The 2007 engines were certified using no.2 diesel, but ULSD will be better.

If "better" refers to the environment , I'd accept that statement at face value. But if it's "better" for an engine that was engineered to Tier 3 standards (<3000/<500 ppm S), I'm dubious.

I know some phasing in has already started, but let me quote the letter of the law here. Some of my facts come from Equipment World Online. Under Tier 3 and prior to 1-1-2007, conventional #2 off road diesel could contain up to 3000 ppm sulphur. As of 1-1-2007, conventional #2 off road diesel must contain no more than 500 ppm sulphur. Under Tier 4 standards, that number will drop again in 2011, to <15ppm. Remember, I'm still talking off-road here. What's currently being referred to as ULSD already meets that 15ppm standard, but that's for on-road diesels.

That said, were the ZN390 and ZN490 certified with #2 off-road diesel under the 3000 ppm definition - or under the new 500 ppm standard? If 3000, doesn't it seem likie a pretty big stretch to state that the 15ppm on-road ULSD will be "better" in those two engines. And does "better" imply no additives required ?

//greg//

 

[gearhead1]

I've been watching this forum as I am very interested in getting a Chinese tractor. I registered, but didn't get approved in enough time to respond to the last thread about the fuel, so here goes!

I worked for Cummins for several years and my experience regarding fuels is this: In-line injection pumps deal fine with light fuels (light meaning low lubricity as compared to diesel such as jet fuel, kereosene, etc.) whereas rotary fuel injection pumps do not like light fuels. If these tractors have an in-line fuel pump, which they appear to from the pics, then based on my experience, I wouldn't worry about it.

My '97 dodge has the Cummins with an in-line pump and I could run kerosene, jet fuel, or whatever (disregarding emissions, but it wouldn't hurt anything except maybe the catalytic converter). The reason being the in-line pump gets it's lubrication from pressurized engine oil. There is an oil line that goes from the pressure galley on the side of the block over to the pump. Contrast this with a rotary injection pump (like the old GM 6.2 diesels or the first version of the Cummins in the Dodge) where the entire pump fills up with fuel. The only lubrication the rotary pump gets is what is in the fuel.

I could go on and on, but I wouldn't worry about it if these are in-line pumps lubricated with engine oil....

 

[joerocker]

Mine gets filled with engine oil that I put in myself. What kind is that?

http://mysite.verizon.net/vze1nh79/...tebuilderpictures/Jinma224InjectorFilling.jpg

 

[gearhead1]

Hmmm......interesting. Can you show a pic of the side view of the pump? I'm guessing that must be an in-line pump that is just using an oil splash system.

The Bosch in-line pumps all use pressure fed oil, and then it drains back out of the pump through a small hole located below the driveshaft in the pump housing mounting face. So the engine would feed oil and it would continuously spill out over the drive gear mounted on the pump shaft, and ultimately land back in the oil pan.

I can't wait to get to Northern to look more closely at a Nortrac! Unfortunately I won't be able to for another 6 months as I am out of the US on business right now.......

 

[gearhead1]

Sorry, I couldn't access that site here. I meant could you e-mail me a pic or just post the pic.

Thanks!

 

[greg_g]

Sorry, I couldn't access that site here. I meant could you e-mail me a pic or just post the pic.

My Mercedes injection pump shares pressurized engine oil too. But these Chinese tractor pumps have their own little sump. I use ISO100 compressor oil in mine. They're a gear-driven all-in-one fuel pump/fuel injector/governor assembly that basically just hangs off the side of the engine block

//greg//

 

[Ranch_Hand_Supp]

GearHead1, Check out these pic's ,

Jinma Dealer, Ranch Hand Supply , Compact Jinma Tractors

I install / run engine oil in the injection pump on the Jinmas.

As all ready posted... they have a seperate oil sump . I think both systems have there pros and cons.

Ronald
Ranch Hand Supply

 

[gearhead1]

Great diagram! That looks just like a Bosch in-line pump!

I doubt you'll have anything to worry about with those pumps, it's definitely ine in-line. I don't know the differences between the compressor oil and engine oil, but I'd be inclined to believe the engine oil would be better for the pump.

 

[gearhead1]

Ron, great pics of the pump!! The Bosch pumps are very similar. Do you work on the pumps on your shop? I agree, the engine oil is designed for use in the pumps, it's got all the additives and everything needed to care for the pump. The big diesels have been doing it for many years.

I looked at your website, I'd like to see you sometime in the summer when I get back. I'm looking at a 20 - 30Hp model with a FEL. I assume you have some of these on the lot ready to go....